Links text and is dispalyed functionality not working

Code:


import java.util.Iterator;
import java.util.List;
import java.util.Set;
import java.util.concurrent.TimeUnit;

import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.fluent.Request;
import org.openqa.selenium.By;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.WebElement;
import org.openqa.selenium.chrome.ChromeDriver;
import org.openqa.selenium.firefox.FirefoxDriver;

public class Flipkart {
public static void main(String[] args) {
System.setProperty("webdriver.chrome.driver", "F:\\chromedriver.exe");
WebDriver driver=new ChromeDriver();
driver.manage().window().maximize();
driver.manage().timeouts().implicitlyWait(20, TimeUnit.SECONDS);
driver.get("http://www.flipkart.com/");
driver.findElement(By.xpath("//*[@id='fk-mainhead-id']/div[2]/div/div/ul/li[2]/a/span")).click();
WebElement box=driver.findElement(By.xpath("//*[@id='menu-men-tab-0-content']/ul[1]"));
List<WebElement> allLinks =box.findElements(By.tagName("a"));
System.out.println(allLinks.size());
for (int i=0;i<6;i++)

{
System.out.println(allLinks.get(i).getText()+"-----------"+allLinks.get(i).isDisplayed());

}




output:

16
-----------false
-----------false
-----------false
-----------true
Formal Shoes-----------true
Sandals & Floaters-----------true




Question: 1 . I run same program many times in chrome and each time response is different? why

2. Why ..... false is coming when we have links displayed also and text is also there

Screenshot attached